The Coast dropper is the world's first Suspension Dropper Post, combining ride smoothing suspension and the benefits of a dropper into one seat post. This dropper is designed to help riders on all types of bikes, from packed up trekkers to the cross country wanderers, even the weekday commuters.The Coast Post was designed to soak up some of these vibrations. PNW accomplished this via 40mm of tunable air suspension housed in the internals to make your ride a bit smoother.Product Features:Diameters: 27.2, 30.9 or 31.6mmDrop Travel: 100 (27.2) or 120mm (30.9/31.6)Air Suspension: 40mmCable Routing: Available with internal or external cable routingCartridge: 2-chamber hydraulic and adjustable air3-year warrantyPerfect for commute, gravel or hardtail bikesNOTE: This is NOT a replacement for rear suspension, it is a suspension seat post which helps absorb the larger bumps while seated. It does not provide small bump compliance found in rear suspension mountain bikes.**LEVER SOLD SEPARATELY** PNW Coast Dropper Seatpost Dropper Seatpost UPC: 850005672210